https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108108
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|other |preprocessor --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >This is a spin-off from bug 52566 I don't think this is different issue from that bug. The preprocessor decided it was the same file. This is why '#pragma once' should not be used.